Lens Supporting Portions for Backlight Diffuser Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional backlight modules suffer from deformation due to thermal expansion, contraction, and vibration, which affects the quality and durability of LEDs, as the supporting structure is easily deformed under these conditions.
Innovation Solution
The integration of a lens body and a supporting portion, formed integrally, is disposed between the light source and the diffuser board, with multiple supporting portions evenly distributed on the lens body to enhance support and reduce height, preventing deformation and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional sheet-shaped supporting structure is disposed between the LEDs, then the diffuser board can be supported, but the supporting structure is easily deformed due to thermal expansion, contraction, and vibration
Solution Approach 1:
The patent merges the lens body and supporting portion into a single integral structure. The supporting portions are formed as extensions of the lens body, eliminating the need for separate supporting structures. This integration ensures that the supporting portions move with the lens body during thermal expansion and contraction, preventing relative deformation and improving overall structural reliability.
Solution Approach 2:
The patent employs multiple supporting portions (at least two) that are distributed around the lens body. These supporting portions act as flexible support points that can accommodate thermal expansion and contraction while maintaining support for the diffuser board. The supporting portions are designed with appropriate geometry (e.g., conic structures) to provide flexibility and resistance to deformation under various conditions.
2Stability of the object's composition
If the supporting structure is made more robust to prevent deformation, then stability improves, but the height of the module increases and complexity increases
Solution Approach 1:
By combining the lens body and supporting portions into a single integral component, the patent eliminates the need for separate supporting structures. This merger reduces the number of parts and assembly steps, thereby reducing device complexity while maintaining supporting stability. The supporting portions are simply extensions of the lens body, formed in the same molding process.
Solution Approach 2:
The lens body serves multiple functions: it focuses/diffuses light and simultaneously provides supporting portions for the diffuser board. This multi-functionality eliminates the need for dedicated supporting structures, reducing overall device complexity. The supporting portions are formed as integral parts of the lens body, combining optical and mechanical functions in a single component.
3Stability of the object's composition
If the supporting structure height is reduced to improve stability, then deformation resistance improves, but the support capability may be compromised
Solution Approach 1:
The patent uses multiple supporting portions (at least two) distributed around the lens body to provide support. These supporting portions are designed with appropriate geometry (e.g., conic structures with specific angles) to provide both sufficient support capability and resistance to deformation. The distribution of multiple supporting portions around the lens body ensures balanced support while maintaining low profile.
Solution Approach 2:
The supporting portions are strategically positioned at specific locations on the lens body (e.g., at the periphery or at specific angles) to provide optimal support. The geometry of the supporting portions is locally optimized (e.g., conic structures with specific apex angles) to balance support capability and deformation resistance. This local optimization allows short supporting portions to provide adequate support while maintaining stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents deformation of the supporting structure, enhancing the stability and light emission performance of the backlight module by distributing pressure evenly and diffusing light more uniformly.
Implementation Method 1
the lens body is configured to diffuse light of the light source
Implementation Method 2
an outer surface of the supporting portion is a coarse surface
Data Source
AI summary
A display device includes a display panel and a backlight module. The backlight module includes a plurality of light sources arranged on a bottom plate, a plurality of lenses disposed on a light emission surface of the light sources, and a diffuser board is on the lens. The lens includes a lens body disposed on the light emission surface of the light source, and a supporting portion disposed between the lens body and the diffuser board. The lens body is configured to diffuse light from the light source, with the supporting portion configured to support the diffuser board.